Drier.



M. wmENBERG 5. H. vv. KING.

DRIER. APPLICMKON FILED JUNE 30.19%6.

2 SHEETSQSHEET 2.

Patented Mar. 4, 191%).

Umani) s Tirs PATENT OFFICE.

MSON WITTENBEBG, 0F Pfhdll'l), ANI) RALPH WALDO KI NG, F THE DALLES,

OREGON', ASSIGNORS T0 PACIFIC EVAPORATOR COMPANY, 0F PORTLAND, OREGQN,

A CORPORATION or ommen.

Application filed .Tune 30, 1916.

T0 nii 'i1/fiom #may cofficcw known that 'we'. n

the Unire' .I county of utili, and State l Kiss. a citizen the United .Stai resi. g The Dallesj county ifi/lance, and State oi' wregon, liai'e invented new and useful improvements in Driers ci which the following is a spccitication.

This invention relates to dricrs and coul sists in certain iniproi'eineiits in the construction thereoi2 as will be hereinafter .fully described and pointed ont in the claims.

liiore particularly the invention adapted to drying food products, such as Vegt tables including fruit. in an apparatus ot this kind there tivo prominent inattei's of consideration, the quality or" the product produced and 'the cost of producing this product.

tion is to increase the ei'iicicncy oi the apparatas Without deterioration of product.

as shown with the tracks 16 and 1'?.

rlie invention is illustrated in panyiii'g drawings as follower*y y F fiii'e 1 shows a section on the line 14-1 in Fig, f

Fig'. a section'oii the line 2-2 in Fig. 1 showing one of the transfer Ways and cars. Fic, a section on the line 3-3 in Fig. 1. e an elevation of `tlie'sidc walls ot thc chamber showing the inlet the accomn secondary d ryi 'o ff with the door of the drying chambers. The nch is arranged Fig. 5 a

cars have the frame 9a on Wl a circular track 10 and the turn tables 11 are arranged on the tracks 10. Tracks 12 are mounted on the turn tables and are of a level to he brought into register with tracks leading to the drying chambers.

The p iary drying chamber 13 is pret'- erably provide with a plurality of traclifs5 Cars Specification of Letters Patent.

The object of the present inveii-v Serial No. 106,819.

Patented Mar. 4, 1919.

18 having tray racks are arranged on these tracks` the cai-s comple tely filling the tracks,

two of the ears being shown iii full and the others being indicated by dash lines. The d by corner posts 18 tray racks are tornio (see Fig. 5).

Angle irons 19 extend between these posts and torni slides on which thc trays 20 are placed. The trays 20 arc provided with the surrounding 5 and (i) and the mesh bottoms 21a. hottoius support the material passage ot' air through it.

introduced to the rail 21 (see Figs. These but permit the These cars are air lock through any suitable means as the door the transfer cai 9 in thc the door 23 on to the track 1G.

and by way of air lock (S through They arc ycarried through thc primary drying chainhei' through the door 24.

and then i by the transfer cai' S) in the aii lock 5 to the track 17 through the door 25, through thc primary drying chamber b.y a door 26 to the an' lock (S. transfer car 9 in the opposite the door to the track drying chamber li.

'They are thon transferred by the air lock G to a point 27 and the car transferred QS leading to the secondary 'The cars are passed over the track Q8 through thc door-"29 by the transfer car tcri'ed to a track in the air lock 5 to a point opposite the door 30 and then trans- 31 and returned through the secondary drying chamber out of the door 32 to thc teii'cd to air lock 6 and again transa point opposite the door 33 and vonto the track 34 and again carried through 'the secondary drying chamber 14 through thc door 35 into the air lock 5 and thence by way of the door 36 and track 37, and again of the door 3S to the it' may he discharged as 39.

The air is heated prior to the drying chamber.

through the drying chamber 14 out air lock 6 from which by any suitable door to its introduction A. Wall 40 is arranged at the inlet side leading to the secondary drying chamber 14. valved openings 42 lead through into the heating passages 41.

A series of the Wall 40 hese heating passages are filled with a heating apparatiis, as shown,

steam coils, the passages being somewhat reduced to force the air into intimate contact proper temperature.

through these heatin into the heating cham with the coils to give it the The air is drawn passages and asses er 14 through aring inlet pasa-mrs 43, those passages 43 being t'ormi-il by they plates lfb-432 top and bottom, tlaring rtsiirotirtfty to nach other. Thel Vtront ands ot' tht'so platos arc supporttd by posts 455". The vtl'ctft, ot' those flaring ii'iltth is to allow thtl air to expand as it' ltarvs tho rontinod h *atinf passages and thun' ,Ljivr to tho ontiro fare of tho stacks of traf/rn on the 'ars in thoy boating! chamber an retinal distribution and volume of air.

Thr air passes; trom tht secondary drying chamber through tho passages 44 which aro taptrrd and li-ad to tubos` 45, the passages 44 extending arrosatbv rntir(` fatft of tho drytrg!I t-hamlwr and thoy slots lnadintr to the tnhoy `rt5 voxttfnding: thov t'ull length of tho passages l-t. Thr tubosI t5 aro prt-fo'ahly taptrtd, brin;r larfft'r at thtx points whtro tho air is ('olltr'trd in tho manifold `tti, Thr air in drawn trom thu manilold hy a tan t?. Thus thr air thus indut'fth passts through tbn boating pasagjva in tht'l arrtmdary Chamhir and out ot tht` outlrt paasagrs ll by thvl aurtion ot thrt'an.

rl`hr air is diarhargrd trom tho tan by a, pip(I `lhl to a manitoid Atft* 'l`ub y 5b* oxt'tnd latt'r: lly `trom thtl manitotdl ttt and thon tubos optn into thtx primaryrhamhrr through alot,`4 ."t. thvhi nlotn rxtruding prtt'- rrably Vlrngg'tlin'iat ot tho rntirt tarn ol' thr 'irin'iary ltlryinp' frhamhtr and bring: ar rangrd at intrrr l trom thtl tloor to thtx top otA #aid rhainhor .-o az: `to di tributtx thtI air through tht trayn on thtA ram in thtprimary' rhambtr.A ii'bt outtr tartl t3 otI thtl primary drying' :'hanibrr in' oprn to tho air or somo larg't-r roonrfo that thorn is a trou disrhargr ol' tht'- air on this outtrt'at't.

ln ordm' toA prt-vont tho air passing around ihr tray rat'lirV on ihr Vars. platos 52 rxtt-.nd upwardly .troni thv tloor prvrrntlnlgr a pasnafl't ol air through thiI trnrlt portion ot tht" wars. timrral ol' thrsr platina' artI proyidod tor thinl purposo fedliuntalilo dotlrt'ting' plato` .")l aro ahzo proyidtd 'in tht' outlrt paasapjon |l. 'lho pui-pom ot thas(l is to roiitrol tho dirt-rtion ol' rurrtnt through thtx Hrt'oudary 'hambrr so as to giri'l it :lpproximatoly Va horizontal diria-tionn lt will bt'. nott'd thaty tht' tray` artl li'ghtly int'linrd and that thin` iiu'liiiation is rryrrsod on thirar` onrat-b tr'n'h. 'l'lurrsult ot' this in' that thtl air passt-5 upwardly through Vthtl bottom 4 otI thtl traynl in tat'h altrruati* ti'at'lt and dou'nn'ardi'y tbroutfh tin-l trays on farb altrrnatt` triu'h.. 'l'o at'romplinh this thr rara' artl turntd halt' around on t'lutranst'tr rara \\htn thtrar artl mortal from omA I'ratflt' to anothtr. 'l'his asanrt-s an rqual dryingr vll'vtt on all portions of tho` trays. ltI is profvrahlr to havr thti air paas through all thtI bottomn ot' tht-trays but only through ono tray in rat'h it'rtittal st-rits horauso Iahould part. of tho air pass through moro than ono tl'ay Home partoI of sn'ph trzys would ht'. suhjoctod only to the moist-ureladtn air which has brun rarried through thov tray ntxtz to it and whilo thtl air passes through a plurality ot trays a1"angod on ditl'trrrnt, tracks thrrtis a uniformity of artion on all parts otl tht tray on tho siamo track. l'ly utilizinlLr thtl txhaust; air from thr fan at'ttr it is drawn through tho star ondary drying;r rhamhor and usingr thin "as a prelimnarvtrvatmvnt t'or tho matorial in tho prin'iary drying` rhambrr thtl rtlit'ivnouot' the apparatus may htl wry much increased bvrauso whilt` thtl air li, tli:ii'; 'td from tho fan is morol or loss moisturwhnltn, nevar thrltss` it will takt', up a f i'rrat dral of moisturo from t'htl trt-sh matt-rial just goingr into tlul drirr so that. with thv samt` [mating t'aparity and rapatity t'or movingr the air tht: quantity which th(l dritr will turn out it: iiu'rtastd lturtlnrt'orr it, is dosirabie to subit-rt the material gradually to thev drirr air no as to prrvtnt snrtarr smiling and thus;

grt a uniform ttl'wt throughout th(` matr rial ln thr apparatufil aa lit-rt shown thv matrrial is lirxt .subit-tod to tho` moiaturt.l` ladrn air disrhargtd trom tho fan in the primary dryin;r hanibtr and is gradually brought to thttinal trat-It iwar tht` intomin} r air. This tinisbrnI thv oprrat'iou and ou thi laat trarl Il? all tht` matt'rial is sub-- jtt'trd to air ot atmonphtrit' humidity.

l. lu a drit'iuthtx 'omhination ot a primary drying' (-bambrr: a nwondary drying rhamlwr tparattd troni thtl primarydrying (-hamlwr: int-lostd ways tor tra'nst'rrring: malt-rial t'rom thtl primary rhamhrr to tho `\'tt'ondarl\' rhamlwr: and nuan tor boating air and pasaing' tht- 4anul through thtl sorondary tliamhrr and 'onrtying; and dvlirt-rin g' thth mnuI to thil primary rhamhtix said ways t'or tran t't\rrinj matt'rial hrin; r induprndrntotI thv nuaintor paving' air.

L. ln :i drirr tlnt'ombination ol' a pri-- mary drying' lnnntl: a wromlary drying; tunnrl `rparatt-d t'ro'ni thtx primary drying.,r tunnrl: a plurality ot' wayx in tht` tt^ondary drying' tunntl: mmm t'or boating' air aud\ panning' thr amt through tht lwrondary tunnt-l and mnu-ying and dliyrrin;r thtx mimo to thtl primary tunutl: and int-tosta) way l on whit-h tht` mattrial may bt' t-onvry't'd t'rom thv primary tunnrl to thtway in thr y tirondary tunnt-l romottl t'rom thtx incoming air and llwn to thr way adjartnt to tho inroniin; r air in aid srt'ontLary tunnrl.

St. In a drivr. thtl t'omliination of' a primary drying: tunnrl: a lsrrondary drying.r

tunnvl wparattd t'romthtl primary dryingr tunntl. aid tunnt-l haringr a plurality ot` n'ay: inrans t'or lit-at ing air and passim;r tht'. santo through tht` svtondary tuuntl and ronyrying and d li\'rriu r thu yHama to thv primary tunnfl, the dirt-'tIon of-air in said tunnels buinfr in n horizontal direction; and

ltltl conveyed from a way remote from the delivery point ot' the air in the primary tunnel to.

a way adjacent to the delivery point ot' said air. thence to a way in the secondary tunnel remote trom the incoming air and then to a way in the secondary tunnel adjacent to said incoming air.

4. In a drier, the combination of a primary drying tunnel; a secondary drying tunnel; a common air lock adapted to be connected with both of siid tunnels; apparatus for heating air and means for passing air heated by the amiaratus indepeiulently of the air lock, first through the secondary tunnel and then through the primary tunnel.

5. In a drier, the combination oi' a primary tunnel and a secondary tunnel arranged side by side; a common air lock extending across the ends of said tunnels; and means for passing air rst through the secondary tunnel and then the' primary tunnel.

6. In a drier, the combination of a pri,- mary drying chamber; a secondary drying chamber; a plurality of ways arranged in said secondary drying chamber; means for drawing air into andthrough the secondary drying chamber across the ways and discharging the same into the `primary chamber and inclosed ways on which the material may be conveyed from the primary chamber to the way in the secondary chamber' remote from the incoming air `and then to the way adjacent to the incomin air.v

7 In a drier, the com 'mation of a drying inlets to the drying chamber: a heater for each passage; and means for compelling a. movement of air through said heating passages and discharging the same through said flaring inlets to the drying chamber.

S. In a drier, the combination ofl a drying chamber; a plurality o'l`- heaters confined in horizontal passages terminating in flaring inlets leading to the chamber, said inlets making a practically continuous opening at the side of the chamber; and means for drawing air through said passages and across said chamber.

t). In a drier, the combination ot' a pri mary drying chamber; a secondary drying chamber; and means ior drawing air through the. secondary drying chan'iber and discharging the same to the primary drying chamber, said means comprising a series of tubes having horizontal slots discharging into the primary chamber.

10. In a drier, the combination of a primary dryingchamber; a secondary drying chamber; means for supporting a series lot' trays in each of said chambers, one above another; a series of trays in said means haring perforated bottoms; and `means for drawing air through the secondary chamber 5 and discharging -the same through the primary chamber in a direction tov` pass the same air through the bottom of one tray only in each series.

Inv testimony whereof we have hereunto 7 set 4our hands.

MASON WITTEN BERG. RALPH WAL'DO KING. 

